Mining-machine



(No Model.) 3 Sheets-Sheet 1.

S. STUTZ.

MINING MAGHINB.

No. 302,958. Patented'Au 5, 1884.

g u. PETERS. Pkmwmmup'mr. Washington. 0.1:.

(No Model.) N 3 meets-sheen 2.

S. STUTZ.

MINING MACHINE.

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(No Model.) I 3 SheetsSheet 3. Q

S. STUTZ.

MINING MACHINE.

Patented Aug. 5, 1884.

l i i,

UNITED STATES TENT Fries.

SEBASTIAN STUTZ, OF PITTSBURG, PENNSYLVANIA.

MINING- ACHINE.

SPECIFICATION forming part of Letters Patent No. 302,958, dated August 5, 1884-.

Application filed January 18, 1884. (N model.)

' which-like letters indicating like parts Figure 1, Sheet 1, is a side view in elevation of a mining-machine embodying my invention;

Fig. 2, a plan or top view of the same; Fig. 3, Sheet 2, a vertical longitudinal central section, on an enlarged scale, through the cylinder, valve-chest, and guide; Fig. 4., a vertical transverse section through the cylinder-and valvechest at the line 2 2 of Fig. 3; Fig. 5, a similar section through the bearings of the adj ustingshaft at the line33 of Fig. 3; Fig. 6, a plan or top view (if a piclcholder detached; Fig. 7, a transverse section through the same at the line i 4 of Fig. 6; Figs. 8 and 9, Sheet 3, vertical longitudinal central sections through the cylinder, valve chest, and guide, illustrating modifications in the valve and its operating mechanism; and Figs. 10 and 11 end views in elevation of the constructions shown in Figs. 8 and 9, respectively.

My present invention relates to coal and ore mining machines having a reciprocating pick or cutting-tool operated by the movements of a piston of a fluid-pressure cylinder; and its objects are specially to aii'ordimproved facilities for the support and convenient adjustment of the machine when in operation, and for rendering the same readily portable, and, further, to provide simple and effective means for operating the distribution-valve governing the movements of the main piston.

My improvements consist in certain novel devices and combinations, including a cylinder journaled on a pair of lateral supportingframcs carrying wheels mounted on the jour nals of the cylinder, means for adjusting the cyiinder vertically about its journals, a piston and rod working in the cylinder and actuating one or more picks or cutting-tools secured in a holder of a special construction, and a distributioirvalve moved in one direction by B, whose lower sides are horizontal, and are provided with shoes or faces I), which are roughened or serrated by a series of backwardly-extending teeth or projections, b, to

prevent recoil of the machine in operation.

The frames B are connected by a transverse brace, I)", and carry at their forward ends bearings If, in which are fitted a pair of side trun- 'nions, a, connected to or cast upon the cylinder A, which is thus adapted to be swung in a vertical plane about the axis of the trunnions.

The forward ends of the frames are curved upwardly eccentrically to a pair of carryingwheels, B, which are mounted upon the trunnions a exterior to the bearings 1) thereof, the diameter of thecarrying-wheels being such that when the frames are swung either into a horizontal position or one in which their rear ends are downwardly inclined the carrying wheels shall be entirely clear of the ground, and the frames 13 will then act as the support of the machine, while by elevating the rear end of the cylinder the carrying-wheels B may be brought into contact with the ground and the frames B raised therefrom, to enable the machine to be transported from place to place upon the oarryingwheels, as may be desired.

The movement of the cylinder about the axis of its trunnions serves to enable the vertical position of the points of the picks to be varied as may from time to time become necessary or desirable while the machine rests upon the supporting'frames B, as well as to raise the same pair of hand-wheels B" by which it may be 7 7 rotated. A spur-pinion, b on the adjustingsha'ft B meshes with a segmental gear, a, on the rear cylinder-head, A", said gear being concentric with the trunnions a, and by the rotation of the adjusting-shaft A in one or the other direction, upward or downward movement, as required, may be imparted to the rear end of the cylinder A, to correspondingly lower or raise its front end and the points of the picks carried by its piston-rod. A pair of operating-handles, 13 project rearwardly from the frames B, said handles serving to enable the operator to resist tendency to upward movement of the machine in operation, as well as to change the position of the points of the picks laterally, and also to sustain the rear end of the frames in the movement of the machine from place to place.

The main piston O, which fits accurately in the cylinder A, is formed in one piece with.

or properly secured to a piston-rod, O,which passes through the long front guide, A, of the cylinder, and carries at its outer end a pickholder, D, which is connected to the pistonrod in such manner as to be readily attached to and detached from the same-in this instance by a transverse key, 0. One or more picks or cutting-tools D may be connected to the outer end of the pick-holder D, and where more than one is employed the several picks may be located either in a vertical series, as in Fig. 1, or a horizontal series, as in Fig. 6, so as to act simultaneously upon the face of the material to be operated on in a plane coinciding with the axis of the pistonrod, and maybe either of uniform or of different lengths, as shown in said figures res pectively. In the instance illustrated, cylindrical shanks (1, formed upon the inner ends of the picks D, are inserted in corresponding sockets in the pick-holder D, and are clamped therein by transverse wedge-bolts (2, having threads upon their smaller ends, engaging nuts (1 which may be screwed to a tight bearing against the side of the pick-holder. Each wedge-bolt may, as shown, act at opposite sides to secure two of the picks, and it will be seen that while the picks are firmly held in the sockets they may, by the slackening of the nuts, be readily detached and removed as required.

The main piston O is guidedl ngitudinall y, as well as held against axial rota tion, by a rear guidebar, E, which, in transverse section, is polygonal or otherwise different from circular, said bar entering a socket of corresponding form in the piston, and being secured to the rear head, A of the cylinder. A bar of circular section may be employed, if so located that its axis shall not coincide with the axis of the cylinder; but I consider a central guide of section as described to be preferable. To prevent shocks of the piston by contact with the front head of the cylinder, I form therein a cylindrical cushion-chamber, a, and provide the piston at its forward end with a corresponding cylindrical "projection, c. The compression of motive fluid induced in the chamber a by the entrance of the projection c as the piston nears the end of its forward stroke acts as a spring to resist its movement and prevent the shock that would otherwise be liable to ensue from its contact with the head.

The admission of motive fluid to and its exhaust from the cylinder A to impart recip rocating movement to the main piston O are effected by a slide distribution-valve, V, which is adapted to reciprocate on a valve-face on the upper side of the cylinder within a valve-chest, C secured thereto, and to govern the open ing and closure of supply and exhaust ports i i e therein, fluid being admitted to the valvechest through either of two lateral supplypipes,c ,c0ntr0lled by a cook or valve, 0". The

distribution-valve V is moved in the direction proper for the admission of motive fiuid to the right-hand side of the main piston, in order to effect the outward or left-hand stroke there of, by means of a valve-operating lever, F, which is coupled at its upper end to the dis tribution-valve, and is actuated by the con tact of the main piston during its right-hand stroke with the lower end of the lever F, or with a rod or projection thereon. The opposite traverse of the distribution-valve-that is to say,that which supplies motive fluid for the right-hand or inward strokeis effected by the pressure of the fluid-within the chest upon the larger of two valve-operating pistons, o 12 fixed'upon a rod, 1), which is coupled to or formed in one piece with the distribution valve V.

Referring to Figs. 3 and 4:, the distributionvalve V is shown as of the ordinary short D type, having a central exhaust-cavity, and as coupled to the rod 1) of the operating-pistons o c by being fitted between collars or shoulders thereon. The valve-operating lever F is journaled upon a transverse shaft, f, fixed in the metal of the cylinder, between the bore thereof and the valve-face, and is adapted to vibrate on said shaft within one of the supplyports 6, which is enlarged for that purpose.

The upper arm of the lever F engages a recess in the lower side of the valve V, and its lower arm, which is curved in the direction of the rear cylinder-head, A is so located as to be moved to the right by the contact of an upwardly-curved or inclined face, 0, formed on the upper side of the main piston O at the right-hand end thereof. The larger and the smaller valve-operating pistons 21 cflwhich are fixed upon opposite ends of the rod 2), fit accurately in chambers c at the ends of the va1ve-chest, which chambers communicate ,by-

ports 03 with the atmosphere beyond the outer ends of the pistons, the inner ends of which are exposed to the pressure within the chest.

The main piston O is shown in Fig. 3 as at the commencement of its left-hand or outer fluid through the front supply-port, z, effects the right-hand stroke of the piston 0, toward the termination of which the contact of the.

face with the valve-operating lever-F moves the valve V to the left and admits motive fluid for the next left-hand stroke. It will thus be seen that the movement of the valve toward the rear end of the cylinder, being effected by fluid-pressure in the'valve-chest, is independent of the length of stroke of the main piston, and that, irrespective of the variable stroke of the piston induced by variations in the distance between the cutting-tool and the face of the material to be worked, the distribution-valve will be shifted from left to right to admit pressure for the return-stroke of the piston. y

In the modificationsillustrated in Figs. 8 to 11 the distribution-valve V is a pistonvalve in lieu of a Dslide, as abovedescribed, and is cast in one piece with the rod o of the valve-operating pistons 12 o The valve-opcrating lever F is, further, located upon the outside of the cylinder-head, and is provided with a stem, 1", passing through a stuffingbox therein, said stem transmitting the movement of the main piston to the lower end of the lever, the upper end of which iscoupled to the rod of the valve-operating pistons. In Figs. 8 and the lever is double-armed and journaled to vibrate upon a transverse shaft, as in Figs. 3 and 4, while in Figs. 9 and 11 a journal is dispensed with, and a reciprocating in lieu of a vibrating lever is. employed, It will be obvious that in such case the movements of the distribution-valve must be in reverse direction to those of the valve of Figs. 3, 4, S, and 10; and to enablesuch movements to be effected, the exhaust-ports e e are located exteriorly to the supply-ports i that is to say, between said supply-ports and the ends of the cylindersuch location being similar to that employedinsteam-hammers and other apparatus in which amovement of the valve and piston in the same direction is required to be effected. In each instance, however, the distribution-valve is moved in one direction by the contact of the main piston with the valve-operating lever, and in the other by the preponderance of pressure upon the larger valve operating piston, as first above de- 1 scribed.

ton'and rod working therein and adapted to reciprocate a pick or cutting-tool, and a pair of lateral truck -frames, upon and between which the cylinder is journaled, and which are adapted to serve as the supports of the machine when in operation.

2. In a mining-machine, the combination,

substantially as set forth, of a cylinder provided with lateral trunnions, a pair of sup porting truck-frames having bearings adapted to receive said trunnions, and a pair of carlying-wheels mounted upon the trunnions.

3. In a miningmachine, the combination, substantially as set forth, of a pair of supporting truck-frames adapted to support the machine when in operation, having bearings at or near their front ends, a cylinder provided with lateral trunnions which are journaled in said bearings, a segmental gear scoured to the rear head of the cylinder and concentric with the trunnions, and an adjustingshaft mounted in bearings at the rear of thesupporting-frames, and carryinga pinion which meshes with said segmental gear.

4. In a mining-machine, the combination, substantially as set forth, of a pair of supporting-frames, a cylinder provided with latcral trunnions journaled in bearings at or near the front of said frames, a pair of carrying-wheels mounted on said trunnions, and a pair of operating-handles projecting rearwardly from the supporting-frames.

5. In a mining-machine, the combination, substantially as set forth, of a pair of supporting-frames, a cylinder journaled in bearings on the upper sides of said frames, and horizontal shoes connected to the lower sides of the supportingframes, and provided with a series of rearwardly-inclined teeth or pro jections. I

6. In a mining-machine, the combination, substantially as set forth, of a steam or air cylinder, a piston and rod adapted to reciprocate therein, and a series of two or more picks or cutting-tools connected to the outer end of a pick-holder secured directly to the piston-rod, so as to act simultaneously upon the face of the material to be operated on in a plane coinciding with the axis of the pistonrod.

7. The combination, substantially as set forth, of a distributioirvalve adapted to govcm the supply and exhaust passages of a steam or air cylinder, a valve-operating lever coupled to said valve and adapted to be moved in one direction by the contact of the piston of said cylinder, and a pair of valve-operating pistons of different diameters, said pistons being fixed upon a common rod connected to the distributionvalve, and being open on their inner sides to the pressure within the valve-chest and on their outer sides to the pressure of the atmosphere.

8. The combination, substantially as set forth, of a cylinder, a main piston and rod working therein, a valve -chest, a distribution-valve moving therein and governing the supply and exhaust passages of the cylinder, and ports or passages connecting said cham- 10 a va1ve-operating lever coupled at its upper bers with the atmosphere on the outer sides end to the distribution-valve, and adapted to of their pistons. be moved in one direction by the action of In testimony whereof I have hereunto set 5 the main piston upon its lower end, a pair of my hand.

valve-operating pistons fixed upon a common SEBASTIAN STUTZ. rod connected to the distribution-valve, a \Vitnesses: pair of sockets or chambers fitting said pis- J. SNOWDEN BELL,

tons and conununicating with the valve-chest, R. H. WVHITTLEsEY. 

